Shaving device and cutter head therefor



E. J. TE PAS SHAVING'DEVICE AND CUTTER HEAD THEREFOR Feb. 17, 1942.

2 Sheets-Sheet' l 47 r FIE-1U INVENTOR Filed Jan. 9, 1939 Feb. 17, 1942.E 4 TE A 2,273,739

SHAVING DEVICE AND CUTTER HEAD THEREFOR Filed Jan. 9, 1939 2Sheets-Sheet 2 fra-JE fza-EJJ flea-.73

' INVENTOR Patented Feb. 17, 1942 s PATENT. OFFICE SHAVING DEVICE ANDCUTTER HEAD I THEREFOR Edmund J. Te Pas, Euclid, omo; Coletta A. Te Pasadministratrix of said Edmund J.

Te Pas, deceased Application January 9, 1939, Serial'No. 249,898

-4 Claims. '(Cl. ac -4s) This invention relates to shaving devices andin particular to devices of the type commonly referred to asdry shavers.

The present application is a continuation-in part of my copendingapplication Serial No, 310L615, filed September 19, 1936., for Shavingdevice, which earlier filed application is directed specifically tothe'species :of the invention illustrated in Figures .1 to 901"thedrawings thereof.

The inVentiOnJhasfOr its objects the provision of a cutter headtfor. ashaving device of the type described, which is adapted to shear all ofthe hair in a given area upon one stroke .of the cutter head over sucharea; the provision of a cutter head formed from a relatively thin,normally flexible piece of sheet metal which is configurated so as to berender-ed substantially rigid; the provision of a shaver head adaptedfor both fast shaving overunobstructed areas'and close shaving in thehard-to-get-at places; the provision of an improved means formaintaining proper contact between'the cooperating cutting elements ofthe device; and the provision of a shaver head which is adapted topermit marked economies in the manufacture of the device.

In the drawings: v

Figure 1 is a side elevational view of a shaver illustrating onemodification of the invention;

Figure '2 is an enlarged detail sectional view taken on line .22, Figure1; v

Figure 3 is an enlarged plan view of the cutter head with a portion ofthe face plate thereof broken away; I

Figure 4 is an enlarged side elevational view of the movable cutter ofthe cutter head;

Figure 5 is a detail plan view of a portion of the invention;

Figure 14 is a detail sectional view taken on line l3-l3, Figure 13;

Figure 15 illustrates another modification of Figure 16 is a perspectiveview of the guard member used in connection with the device illustratedin Figure 15; I

Figure 1'7 is an enlarged sectional view of the guard member taken online IB-l5,'Figure 16;

Figure 18 is a perspective view of ,aflmovable cutter member which is,used in connection with the guard'member illustrated in Figure 16;

Figure 19 is a side elevational view of the cutter shown in Figure 18; a

Figure'20 is an end view, partly in section, of

the operating end of, the; device shown in Fig ure 15;

Figure 21 is a perspective view of yet another modification of theinvention; and

Figure 22-is a fragmentary perspective view of the movable cutter usedin the shaver shown in Figure 11. 1

.The, species of the invention illustrated in Figure 1 of the drawingscomprises a hollow handlel, within whicha motor (not shown) is providedfor oscillating a drive lever 2. Current .to the motor is supplied bymeans of an electric cord 3. The device is provided with a cutter headindicated generally by the numeral 4 which may be held in place inthehandle I by means 10f a thumb screw 5; The cutter head comprises a frameor body portion 6 and a relatively thin, corrugated, sheet-metal faceplate 9 of substantially uniform thickness. The face plate is securedatits corners to the corner posts of the frame member 6 by any suitablemeans such as screws 1. g

The face plate 9 is provided at one of its edges with a series of open.slots8 andat its opposite edge it is provided with a similar series ofopen slots NJ. These slots define curved; pointed outter bars or combteeth H and 12, respectively.

i The intermediate portion of the face plate is Figure 10 is afragmentary plan view of the cutter shown in sectional view Figure 9;

provided with two series of slots 13 and I4 which define a plurality ofcurved or U-shaped cut-- ter bars which-are supported at their oppositeends. The slots defining the cutter bars and comb teeth extend acrossthe crests of the ridges defined by the corrugations of the face plate.

By referring to Figure 3 of the drawings, it will be seen that the slotsof each series are staggered or offset with respect to the slots of thenext series. The slots are of such width and so placed that the entirearea of the skin is exposed to the cutting action of the device upon asingle stroke of the shaver over a given area. The face plate is ofsubstantially uniform thickness throughout its entire area. The crestsof the corrugations, however, may be ground down slightly so as topermit extremely close shaving.

The movable cutter I!) of the device which is illustrated in detail inFigure 5, comprises a series of cutter teeth |5 at one edge and anoppositely pointing series of cutter teeth H3 at its opposite edge.Intermediate the two edges of the cutter, a series of cutter bars I1 andanother series of cutter bars I8 are provided. The cutter member IS ingeneral conforms to the outline of the face plate of the cutter head asis evident from a consideration of Figure 2 of the drawings.

Proper contact is maintained between the face plate 9 and the movablecutter l9 by means of a folded-over flat spring 20, the ends of whichare welded or otherwise fixedly secured to the underside of the cuttermember. The intermediate portion of the spring 20 is notched at 2| forreceiving the end of the oscillating lever 2. The notched part 2|presses against the lever 2 to an extent sufficient to maintain properyielding contact between the cooperating cutter and face plate. Theprovision of the spring 20 eliminates the need of spring-pressed pins orother devices'which are commonly used to maintain the cutter of a deviceof the type to which this invention relates in contact with theunderside of the face plate.

Figure 6 illustrates a modified form of face plate 22 which differs fromthe face plate previously. described in that the intermediate cutterbars 23 and 24 of the face plate are unsupported at their outer ends andalso in that the cutter bars 25 and 26 at the opposite edges of the faceplate both point in the same direction which corresponds to thedirection in which the intermediate cutter bars 23 and 24 point.

.Figure 7 illustrates a movable cutter 30 which may be usedin connectionwith the face plate shown in Figure 6. This cutter is in the form of acorrugated plate of similar configuration to the face plate 22 and it isprovided with four series of freely projecting, pointed cutter bars 3|,32, 33 and 34, which are adapted to cooperate with bottom edges of thecutter bars 23, 24, 25 and 26 of the face plate 22, after the mannerpreviously described in connection with the species of the inventionfirst described.

Figure 9 illustrates another modification of the invention in which theface plate 40 may correspond to either one of the face plates previouslydescribed. In this species of the invention the movable cutter 4| isprovided with four series of relatively short, pointed teeth 4|, 42, 43and 44 which sweep across a portion at least of the slots of the faceplate 40.

The cutter member 4| is corrugated somewhat diiferently from the faceplate so that' the toothed portions only of the cutter member contactwith the face plate as is clearly illustrated in Figure 9. The cuttermember 4| is designed so that it may be formed from a sheet-metalstamping without requiring the need of expensive and tedious milling orcutting operations to form the teeth of the cutter.

In the form of the invention illustrated in Figure 11, the device isprovided with a hollow handle'formed from mating halves Ill and 1| forthe housing of a motor (not shown). The motor is providedwith a manuallyoperable starting wheel 12 which is carried by the armature shaft 14 ofthe motor. The shaft .14 is provided with an eccentric pin 15 at itsouter end.

The pin 15 is received in a slotted bearing member Ma attached to arelatively thin cutter plate 11, the ends of which are bent-over at 16and slotted at 16a to form a series of cutter bars which cooperate witha folded-over sheet metal guard member 18, the edges of which areslotted at 80 to form a series of cutter bars which cooperate with theslotted portions of the cutter. The contiguous edges of the guard membermay be welded to each other as indicated by the numeral 13.

A rectangular opening Ila is formed at each side of the top of the guardmember to facilitate the removal of hairs which are sheared off duringthe operation of the device and similar openings (not shown) may beprovided at the underside of the guard member if desired. The guardmember 18 is provided with lengthwise extending offset portions 8| whichprovide space for reception of fibrous oil-retaining material 82 bymeans of which the cutter may be lubricated. The guard member isprovided at its underside with suitable openings 84 and 85 whichcooperate with rivets 86 and 81 to effect the attachment of the cutterhead to the handle. This operation is facilitated by arranging the shaft14 so that it may be axially shifted out of engagement with the cutterand the guard member.

It will be seen upon consideration of Figures 12 to 14, that after thewheel 72 and the shaft '14 are moved downwardly as far as they can go,the cutter head may be slid to the left to bring the heads of the rivets8B and 8'! into registry with the enlarged openings 84 and 85 of thecutter head whereby the same may be liftedfrom the handle for cleaningor other purposes.

In the modification illustrated in Figure 15,

'the cutter head is provided with a generally rectarygular sheet metalguard member in the form a corrugated plate 93, the individualcorruformed corrugated plate 94 having slots I04, constitutes a cutterwhich is adapted to be reciprocated in contact with the rear face of theplate 93 so that hairs projecting through the slots of the guard memberwill be sheared oif by the cutter during its reciprocation. Springs 94ahold the cutter 94 in contact with the guard member 93. e

The ends of the corrugated plate 93 are provided with laterallyextending securement members which are notched at 95a and I02 forregistry with securement bars 95 and NH respectively. The bar lill isfixedly mounted in the handle 99 of the shaver. The bar 95 is attachedto one end of a lever 96 which is pivoted at 96a to the han- A spring95b is provided to urge the lever in a direction so that the bar 95 willbe maintained in engagement with the notch 95a of the guard member.Removal of the guard member may be readily efiected upon pressing theexposed end of the lever 96 whereupon the bar 95 will be withdrawn fromengagement with the notch 95a of the guard member and the guard memberthen may be readily removed from the handle 99.

A notched or slotted plate N35 is attached to the rear side of thecutter 94. The notch of this plate receives the pin I38 of anoscillatable lever I09 which is pivotally mounted in the handle on a pin||U. At the end of the lever I09, remote from the pin I08, a notch orslot III is provided for receiving an eccentric pin H2 which is fixed tothe operating shaft H3 of the device. This shaft may constitute thearmature shaft of a motor (not shown) which may be carried inside thehandle 99. The numeral H4 indicates the starting wheel of the motor ofthis form of shaver.

The form of shaver illustrated in Figure 21 is very similar to thedevice illustrated in Figure 11 and it differs therefrom principally inthat the slotted edge I i5 of the guard member is V-shaped incross-section instead of being of rounded construction as shown inFigure 11. A cutter H6, which is also much the same as the cutter 11, isshaped at its one edge 50 as to conform to the V-shaped configuration ofthe guard member I IS.

The guard member is provided at its other side with three V-shapedcorrugations H1 which are slotted in the same manner as for the edge H5and the cutter H6 is similarly shaped at this side of the device withnotched or slotted ridges H8 similar to those illustrated in Figure 18.The slots which are formed in the portions H! of the guard member arearranged in staggered relation in the manner previously described forthe form of the guard member illustrated in Figure 16.

The foregoing description and the accompanying drawings to which itrelates, describes what might be termed the preferred modes ofpracticing the invention. It is to be clearly understood, however, thatthe invention includes each and every novel feature or combination ofnovel features herein disclosed, subject only to the restrictions of theprior art, and that the invention may assume other forms and it is notto be limited to the particular and specific structures shown anddescribed herein.

Having thus described my invention what 1 claim is:

1. A corrugated face plate for a shaving device having a plurality ofseries of cutter bars adapted for simultaneous contact with the skin,said cutter bars being in the form of comb teeth with unsupported outerends and projecting in the same general direction.

2. A corrugated face plate for shaving devices having a plurality ofseries of cutter bars adapted for simultaneous contact with the skin,the cutter bars being thinner at the point of contact with the skin thanat other parts of the face plate, and pointed outwardly extendingmarginal cutter bars in the form of comb teeth with unsupported outerends and projecting away from the central portion of said plate.

3. A corrugated face plate for shaving devices having a plurality ofseries of cutter bars adapted for simultaneous contact with the skin,the two outer-most series being in the form of pointed comb teeth withunsupported outer ends and projecting away from the central portion ofsaid face plate, and supporting means on the ends of said face plate forsaid cutter bars.

4. A corrugated face plate for a shaving device having a plurality ofseries of cutter bars adapted for simultaneous contact with the skin,cutter bars of the innermost series being in the form of comb teethsupported at their opposite ends, and the cutter bars in the outerseries projecting away from the central portion of said face plate inthe form of outwardly projecting pointed comb teeth, and a cutter memberhav- 1 ing teeth adapted to traverse a portion, at least,

of said cutter bars at the underside of said face plate, and means fortranslating said cutter member.

EDMUND J. TE PAS.

